[Sony Ericsson Xperia Mini, Mini Pro, Xperia Pro, A] havocgb:
I rooted my phone 4 months ago and since then has succesfully copy/pasted stuff into /system numerous times. I moved to CM10 2 months back and even then I was able to copy/paste to /system. I mainly use root browser lite and CM File manager to do so. But recently whenever I try pasting a file to /system a toast notification appears saying operation failed and a 0 byte (or sometimes 100b) file appears in /system. I can change file permissions in /system and delete files from /system using these file managers, showing that my phone is still rooted and these apps have root access. But pasting doesn't work. I have attached a logcat of an event when I tried to paste a file to /system partition using CM file manager. Somebody please help me :(

BTW the CM File manager I use was obtained from this post here

Logcat:

build.board: mogami

build.bootloader: unknown

build.brand: SEMC

build.cpu_abi: armeabi-v7a

build.cpu_abi2: armeabi

build.device: coconut

build.display: cm_coconut-userdebug 4.1.2 JZO54K eng.root.20121222.002343 test-keys

build.fingerprint: SEMC/WT19i_1254-2184/WT19i:4.0.4/4.1.B.0.431/UL5_3w:user/release-keys

build.hardware: semc

build.host: ubuntu

build.id: JZO54K

build.manufacturer: SEMC

build.model: Xperia Live with Walkman

build.product: WT19i

build.radio: unknown

build.serial: unknown

build.tags: test-keys

build.time: 1356128638000

build.type: userdebug

build.user: root

version.codename: REL

version.incremental: eng.root.20121222.002343

version.release: 4.1.2

version.sdk_int: 16

01-22 12:04:23.268 W/InputMethodManagerService(354): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@2b915098 attribute=null

01-22 12:04:32.278 D/dalvikvm(4011): GC_CONCURRENT freed 1848K, 48% free 4280K/8195K, paused 3ms+15ms, total 88ms

01-22 12:04:33.288 D/dalvikvm(4011): GC_CONCURRENT freed 1900K, 50% free 4166K/8195K, paused 3ms+17ms, total 80ms

01-22 12:04:34.808 E/NavigationActivity(4011): Error detected

01-22 12:04:34.808 E/NavigationActivity(4011): com.cyanogenmod.filemanager.console.ExecutionException: exitcode != 0

01-22 12:04:34.808 E/NavigationActivity(4011): at com.cyanogenmod.filemanager.commands.shell.CopyCommand.checkExitCode(CopyCommand.java:76)

01-22 12:04:34.808 E/NavigationActivity(4011): at com.cyanogenmod.filemanager.console.shell.ShellConsole.syncExecute(ShellConsole.java:562)

01-22 12:04:34.808 E/NavigationActivity(4011): at com.cyanogenmod.filemanager.console.shell.ShellConsole.execute(ShellConsole.java:395)

01-22 12:04:34.808 E/NavigationActivity(4011): at com.cyanogenmod.filemanager.util.CommandHelper.writableExecute(CommandHelper.java:1585)

01-22 12:04:34.808 E/NavigationActivity(4011): at com.cyanogenmod.filemanager.util.CommandHelper.writableExecute(CommandHelper.java:1477)

01-22 12:04:34.808 E/NavigationActivity(4011): at com.cyanogenmod.filemanager.util.CommandHelper.copy(CommandHelper.java:740)

01-22 12:04:34.808 E/NavigationActivity(4011): at com.cyanogenmod.filemanager.ui.policy.CopyMoveActionPolicy$1.doOperation(CopyMoveActionPolicy.java:361)

01-22 12:04:34.808 E/NavigationActivity(4011): at com.cyanogenmod.filemanager.ui.policy.CopyMoveActionPolicy$1.doInBackground(CopyMoveActionPolicy.java:326)

01-22 12:04:34.808 E/NavigationActivity(4011): at com.cyanogenmod.filemanager.ui.policy.ActionsPolicy$BackgroundAsyncTask.doInBackground(ActionsPolicy.java:131)

01-22 12:04:34.808 E/NavigationActivity(4011): at com.cyanogenmod.filemanager.ui.policy.ActionsPolicy$BackgroundAsyncTask.doInBackground(ActionsPolicy.java:88)

01-22 12:04:34.808 E/NavigationActivity(4011): at android.os.AsyncTask$2.call(AsyncTask.java:287)

01-22 12:04:34.808 E/NavigationActivity(4011): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)

01-22 12:04:34.808 E/NavigationActivity(4011): at java.util.concurrent.FutureTask.run(FutureTask.java:137)

01-22 12:04:34.808 E/NavigationActivity(4011): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)

01-22 12:04:34.808 E/NavigationActivity(4011): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)

01-22 12:04:34.808 E/NavigationActivity(4011): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)

01-22 12:04:34.808 E/NavigationActivity(4011): at java.lang.Thread.run(Thread.java:856)

01-22 12:04:34.859 W/InputMethodManagerService(354): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@2bc6c4b8 attribute=null

01-22 12:04:36.868 D/dalvikvm(441): GC_CONCURRENT freed 2268K, 41% free 4888K/8195K, paused 4ms+13ms, total 226ms

01-22 12:04:38.429 V/PhoneStatusBar(441): setLightsOn(true)

01-22 12:04:38.678 D/dalvikvm(4270): GC_CONCURRENT freed 1134K, 42% free 4793K/8195K, paused 3ms+12ms, total 78ms

01-22 12:04:44.588 D/dalvikvm(735): GC_CONCURRENT freed 1739K, 62% free 3132K/8195K, paused 4ms+10ms, total 65ms

01-22 12:04:44.588 D/dalvikvm(735): WAIT_FOR_CONCURRENT_GC blocked 9ms

01-22 12:04:48.638 D/dalvikvm(4270): GC_FOR_ALLOC freed 860K, 49% free 4223K/8195K, paused 21ms, total 29ms

01-22 12:05:01.768 D/dalvikvm(4270): GC_FOR_ALLOC freed 229K, 45% free 4557K/8195K, paused 21ms, total 22ms

01-22 12:05:01.768 I/dalvikvm-heap(4270): Grow heap (frag case) to 12.666MB for 119056-byte allocation

01-22 12:05:37.408 D/dalvikvm(4270): GC_CONCURRENT freed 1183K, 42% free 5164K/8839K, paused 5ms+19ms, total 59ms

01-22 12:05:41.588 E/MobileDataStateTracker(354): default: unknown network type: 0

01-22 12:05:41.588 D/ConnectivityService(354): ConnectivityChange for mobile: DISCONNECTED/DISCONNECTED

01-22 12:05:41.598 D/ConnectivityService(354): Attempting to switch to wifi

01-22 12:05:41.598 D/ConnectivityService(354): Attempting to switch to BLUETOOTH_TETHER

01-22 12:05:41.628 D/NetUtils(354): android_net_utils_resetConnections in env=0x252080 clazz=0x47d00001 iface=rmnet0 mask=0x3

01-22 12:05:41.628 D/ConnectivityService(354): resetConnections(rmnet0, 3)

01-22 12:05:41.648 D/PhoneStatusBar(441): addNotification score=0

01-22 12:05:42.538 W/Smack/Packet(660): notify conn break (IOEx), close connection